Acetylcholine (ACh)
Acetylcholine is an organic chemical that functions in the brain and body of many types of animals as a neurotransmitter.
Answer:
In biology, cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells. Cells are the basic unit of structure in all organisms and also the basic unit of reproduction. ... Cell theory was eventually formulated in 1839.
The spleen. It acts as sort of a filter for your blood. :)
Child’s idea that suspense is created through delaying answers is the most effective way to create suspense. People can’t help but want to know answers. This is true whether or not they care about the people in the story. However, Child seems to think any unanswered questions create suspense, and I think the questions have to be about bad or dangerous situations.
